Interesting stuff Tim. It was the Live View improvements that most interested me too. When I've used a D800 in the past I've always felt its LV function was a poor relation to my Canon 5D3's.
The dual window feature is definitely of interest, I often use LV to check my DoF [...]

Thank you David, absolutely fascinating - I think of you as a sort of photographer philosopher. I don't know if there is any other magazine focussing on landscape photography where you could read such stuff? Looking forward to the next part.